TY  - BOOK
AU  - Mansfield,Edwin
TI  - Statistics for business and economics: methods and applications 
SN  - 0393955699
U1  - 519.5 23
PY  - 1980/// [reprinted 1987]
CY  - New York, London
PB  - Norton
KW  - Business mathematics
KW  - Problems, exercises, etc
KW  - Mathematical statistics
ER  -